Laser-Induced Ejection of Millimeter-Sized Liquid Droplet from Metal Surface with a 1 Joule/Pulse ns-Laser

The laser-induced cleaning of a liquid droplet from the surface of a solid substrate is an attractive application of laser technology. We report the laser-induced ejection of an organic carbonate liquid droplet from an aluminum surface using a one Joule per pulse class nanosecond-pulsed laser. The dynamic behavior of the liquid desorption was observed with a high-speed CCD camera. The use of high-power laser equipment makes it possible to perform single-pass cleaning of large areas on a solid surface with a non-contact process.